Table 6-8
Diagnostic lights and audible codes
Activity
Possible cause
Recommended action
Blue Power LED on. No
beeps.
Workstation on.
N/A
Blue Power LED blinks every
two seconds. No beeps.
Workstation in Sleep mode
(S3-Suspend to RAM). Select
models only.
Blue Power LED is off. No
beeps.
Workstation in Hibernate
mode (S4-Suspend to disk)
or off state (S5).
Blue Power LED blinks three
times*, once per second.
No beeps.
Workstation in Sleep mode
(S3-Suspend to RAM). Select
models only.
Blue Power LED blinks four
times*, once per second.
No beeps.
Workstation in Hibernate
mode (S4-Suspend to disk).
* User-selectable. The BIOS option you select controls the
blue LED function during these suspend modes. See
The
Computer Setup (F10) Utility menu on page 34
for details.
For the following LED activity and beeps, the beeps are heard through the chassis speaker. Blinks and beeps repeat for 5 cycles, after
which, only the blinks continue to repeat.
Red Power LED blinks two
times, once every second,
followed by a two-second
pause. Two beeps.
CPU thermal protection
activated by either of the
following methods:
●
A fan might be blocked
or not turning.
●
The heatsink and fan
assembly is not
properly attached to
the CPU.
CAUTION:
Internal components might be powered even when the
workstation is off. To prevent damage, disconnect the workstation power
cord before you remove a component.
1.
Ensure that the workstation air vents are not blocked and the
cooling fan is running.
2.
Open the access panel, press power button, and verify that the CPU
fan is spinning. If the CPU fan is not spinning, make sure the fan
cable is plugged into the workstation board header. Ensure the fan
is fully and properly seated or installed.
3.
If fan is plugged in and seated properly, but is not spinning, the
problem might be in the CPU fan. Contact HP for assistance.
4.
Verify that the fan assembly is properly attached. If problems
persist, there might be a problem with the CPU heatsink. Contact
HP for assistance.
Red Power LED blinks three
times, once every second,
followed by a two-second
pause. Three beeps.
CPU not installed (not an
indicator of bad CPU).
1.
Verify that the CPU is present.
2.
Reseat the CPU.
196
Chapter 6 Diagnostics and troubleshooting
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Содержание Z400 - Workstation
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